Tales by Dots and Lines: Practice 1

Section A: Core Practice

Question 1mcq

Find the mean of the data set

[10, 12, 12, 16, 20]

.

A.

14

B.

10

C.

70

D.

20

Question 2mcq

Find the mean of the data set

[1, 3, 7, 7, 7]

.

A.

25

B.

1

C.

5

D.

7

Question 3mcq

The data values are

4,4,6,6,10

with mean

6

. Which action shows the idea of mean as balance?

A.Change every value to

10

.

B.Move

2

from

10

to one of the

4

s to balance around

6

.

C.Delete all values below the mean.

D.Use the largest value only.

Question 4mcq

A dot plot has values

2,3,3,4,4,4,5,10

. Which conclusion is most reasonable?

A.All values are equal.

B.The data has no spread.

C.The smallest value is

10

.

D.Most values are clustered near the middle, with one high value.

Question 5mcq

A dot plot has values

2,3,3,4,4,4,5,10

. Which conclusion is most reasonable?

A.The smallest value is

10

.

B.The data has no spread.

C.All values are equal.

D.Most values are clustered near the middle, with one high value.

Question 6mcq

Which situation is best represented by a line graph?

A.A line graph is useful for showing change over time.

B.Favourite colours of students

C.Shapes found in a classroom

D.Types of books in a library

Section B: Reasoning and Application

Question 7mcq

A line graph rises from

10

to

30

to

45

, then changes to

46

and

47

. What trend does it show?

A.The value increases quickly at first and then becomes almost steady.

B.Random values with no pattern

C.No change at all

D.A constant decrease

Question 8mcq

A student reads a bar/line graph without checking the axis scale. What mistake may happen?

A.The graph cannot show numbers.

B.Use the graph scale before reading values.

C.The data automatically becomes invalid.

D.The title becomes unnecessary.

Question 9mcq

Find the mean of the data set

[10, 12, 12, 16, 20]

.

A.

20

B.

14

C.

70

D.

10

Question 10mcq

Find the mean of the data set

[1, 3, 7, 7, 7]

.

A.

5

B.

1

C.

25

D.

7

Question 11mcq

The data values are

4,4,6,6,10

with mean

6

. Which action shows the idea of mean as balance?

A.Use the largest value only.

B.Move

2

from

10

to one of the

4

s to balance around

6

.

C.Change every value to

10

.

D.Delete all values below the mean.

Question 12mcq

A dot plot has values

2,3,3,4,4,4,5,10

. Which conclusion is most reasonable?

A.The smallest value is

10

.

B.All values are equal.

C.The data has no spread.

D.Most values are clustered near the middle, with one high value.